Text过长收起

来源：互联网发布：apache flink 编辑：程序博客网时间：2024/04/29 17:06

TextView过长，超过6行，便收起

代码：

public class CollapsibleTextView extends LinearLayout implements OnClickListener {

   /** 最大显示的行数 */
   private static final int DEFAULT_MAX_LINE_COUNT = 8;

   /** 实际展示的行数 */
   private static final int DEFAULT_SHOW_LINE_COUNT = 6;

   /** View 默认状态，即不是展开状态也不是收缩状态 **/
   private static final int COLLAPSIBLE_STATE_NONE = 0;

   /** View处于展开状态 **/
   private static final int COLLAPSIBLE_STATE_SHRINKUP = 1;

   /** view收缩时状态 **/
   private static final int COLLAPSIBLE_STATE_SPREAD = 2;

   /** 显示内容的View */
   private TextView tv_context;

   /** 展开/收起按钮 */
   private TextView bt_spread;
   private String shrinkup;
   private String spread;
   private boolean flag;
   private int nowType;
   private CollapsibleTextView coTextView;
   /** 判断是不是点击了查看更多、收起 */
   private boolean isClicke = false;
   private int lookCount = 0;

   public CollapsibleTextView(Context context, AttributeSet attrs) {
       super(context, attrs);
       shrinkup = "收起";
       spread = "全文";
       View view = inflate(context, R.layout.collapsible_textview, this);
       view.setPadding(0, -1, 0, 0);
       tv_context = (TextView) view.findViewById(R.id.tv_context);
       bt_spread = (TextView) view.findViewById(R.id.bt_spread);
       bt_spread.setOnClickListener(this);
   }

   public CollapsibleTextView(Context context) {
       this(context, null);
   }

   /**
   * 赋值
   */
   public final void setDesc(CharSequence charSequence,CollapsibleTextView tv, BufferType bufferType) {
       this.coTextView = tv;
       // 对内容中的网址进行处理;
       tv_context.setAutoLinkMask(Linkify.WEB_URLS);
       tv_context.setMovementMethod(LinkMovementMethod.getInstance());

//小表情判断

SpannableString spannableString =FaceConversionUtil.getInstace().getExpressionString(getContext(), charSequence.toString());

       tv_context.setText(spannableString, bufferType);
       lookCount=0;
       coTextView.setNowType(COLLAPSIBLE_STATE_SPREAD);
       lookCount += 1;
       flag = false;
       isClicke=false;
       bt_spread.setVisibility(View.GONE);
       requestLayout();
   }

   @Override
   public void onClick(View v) {
       flag = false;
       isClicke = true;
       requestLayout();
   }

   @SuppressLint("DrawAllocation")
   @Override
   protected void onLayout(boolean changed, int l, int t, int r, int b) {
       super.onLayout(changed, l, t, r, b);
       if (!flag) {
           flag = true;
           if (tv_context.getLineCount() <= DEFAULT_MAX_LINE_COUNT) {
               bt_spread.setVisibility(View.GONE);
               tv_context.setMaxLines(DEFAULT_MAX_LINE_COUNT + 1);
               coTextView.setNowType(COLLAPSIBLE_STATE_NONE);
           } else {
               post(new InnerRunnable());
           }
       }
   }

   class InnerRunnable implements Runnable {
       @Override
       public void run() {
           int zType = 0;
           // 第一次进入操作（没有点击并且是第一次进入）；
           if (!isClicke && lookCount == 1) {
               if (coTextView.getNowType() == COLLAPSIBLE_STATE_SPREAD) {
                   tv_context.setMaxLines(DEFAULT_SHOW_LINE_COUNT);
                   bt_spread.setVisibility(View.VISIBLE);
                   bt_spread.setText(spread);
                   zType = COLLAPSIBLE_STATE_SHRINKUP;
               } else if (coTextView.getNowType() == COLLAPSIBLE_STATE_SHRINKUP) {
                   tv_context.setMaxLines(Integer.MAX_VALUE);
                   bt_spread.setVisibility(View.VISIBLE);
                   bt_spread.setText(shrinkup);
                   zType = COLLAPSIBLE_STATE_SPREAD;
               }
               coTextView.setNowType(zType);
               // 点击了查看更多、收起转换状态；
           } else if (isClicke) {
               isClicke = false;
               if (coTextView.getNowType() == COLLAPSIBLE_STATE_SPREAD) {
                   tv_context.setMaxLines(DEFAULT_SHOW_LINE_COUNT);
                   bt_spread.setVisibility(View.VISIBLE);
                   bt_spread.setText(spread);
                   coTextView.setNowType(COLLAPSIBLE_STATE_SHRINKUP);
               } else if (coTextView.getNowType() == COLLAPSIBLE_STATE_SHRINKUP) {
                   tv_context.setMaxLines(Integer.MAX_VALUE);

                   bt_spread.setVisibility(View.VISIBLE);
                   bt_spread.setText(shrinkup);
                   coTextView.setNowType(COLLAPSIBLE_STATE_SPREAD);
               }
           }
       }
   }

   public int getNowType() {
       return nowType;
   }

   public void setNowType(int nowType) {
       this.nowType = nowType;
   }
}

xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/tv_context"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:textColor="#7B7A78"
        android:textSize="14sp" />

    <TextView
        android:id="@+id/bt_spread"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="left|center_vertical"
        android:paddingBottom="2dp"
        android:paddingRight="50dp"
        android:singleLine="true"
        android:textColor="#60C4B8"
        android:textSize="15sp"
        android:visibility="gone" />

</LinearLayout>

如果这个textView要使用这个收起，查看：

xml:

<com.xxx.xxxxxx.CollapsibleTextView
                android:id="@+id/theme"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginBottom="5dp"
                android:layout_marginTop="5dp" />

代码自定义：

viewHolder.theme = (com.xxxx.xxxxxCollapsibleTextView) convertView.findViewById(R.id.theme);

viewHolder.theme.setDesc(entity.getTheme(), viewHolder.theme, BufferType.NORMAL);

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